CN101964539B - Relay protection device of variable pitch blade system of wind driven generator - Google Patents
Relay protection device of variable pitch blade system of wind driven generator Download PDFInfo
- Publication number
- CN101964539B CN101964539B CN201010255134XA CN201010255134A CN101964539B CN 101964539 B CN101964539 B CN 101964539B CN 201010255134X A CN201010255134X A CN 201010255134XA CN 201010255134 A CN201010255134 A CN 201010255134A CN 101964539 B CN101964539 B CN 101964539B
- Authority
- CN
- China
- Prior art keywords
- relay
- power
- circuit
- signal
- brake actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention provides a relay protection device of a variable pitch blade system of a wind driven generator. The device comprises a power source, a variable pitch blade motor relay, a brake relay, a relay control circuit and a control power source, wherein the power source is used for supplying power to the variable pitch blade motor and a brake thereof; the variable pitch blade motor relay is used for controlling power-on or power-down of the variable pitch blade motor; the brake relay is used for controlling the power-on or power-down of the brake; the relay control circuit is used for controlling the power-on or power-down of the variable pitch blade motor relay and the brake relay; the control power source is used for supplying power for the relay control circuit; and the relay control circuit is a digital circuit. The device has the advantages of realizing digital protection of a single blade, improving the action feature and the performance of the relay protection, occupying small space and volume of a shaft control cabinet and greatly reducing the power consumption, along with high correctness, stability, reliability and self-examination and polling capacity, friendly man-machine interface, superior technical structural conditions, remarkable economic benefit and obvious technical improvement, and is flexible and convenient to use, and easy to use on a large scale and popularize.
Description
Technical field
The present invention relates to new energy field, specifically the digital protection system of fan paddle-changing system in the wind power generation control technology.
Background technology
Wind energy is clean energy resource with fastest developing speed in the regenerative resource, also is the generation mode that has large-scale development and commercialized development prospect most.The THE WIND ENERGY RESOURCES IN CHINA reserves are abundant, and the development wind energy has Great significance for improving energy resource structure alleviation energy shortage.In recent years, China's Wind Power Generation Industry scale progressively enlarges, and wind-powered electricity generation has become the key areas of energy development.
Aspect the wind power technology development, the wind-driven generator single-machine capacity is towards large scale development, and the MW class wind energy conversion system has become the main product in international wind power generation market.Large-scale Wind Turbines generally adopts the variable pitch control technology at present.The variable pitch adjusting is the longitudinal axis rotating vane along blade, and the energy absorption of control wind wheel keeps certain power output.The advantage of variable pitch control is to guarantee the rated power of high wind speed section, the above output of rated power point steadily, have higher power coefficient at rated point, improve Wind turbine starting performance and braking ability, the overall flexibility degree of raising blower fan, reduce the force-bearing situation of complete machine and blade.
The protective device that becomes the oar electrical system generally adopts protective relaying device, is analog control circuit, realizes electic protection by the normally-open normally-close contact of relay.The development of protective relaying device then depends on the development that consists of protective relaying device components and parts technology.Present pitch-controlled system adopts conventional relay protection substantially, and a charger is responsible for the Charge Management of three storage batterys, at aspects such as volume, stability, reliability, flexibilities very large deficiency is arranged all simultaneously.It is large that conventional relaying protection takies axle control cabinet space; Need a plurality of relay interlocking linkages, consumption systems power; The cantilever beam structure of relay, the possibility misoperation reduces relay quantity when fan vibration, has also just reduced the possibility of misoperation.
Summary of the invention
The object of the invention is to provide a kind of hardware designs and software control flow process of variable blade control system digital protection.
The technical solution adopted in the present invention is:
A kind of pitch system of wind driven generator protective relaying device comprises:
Electrical source of power is used for to becoming the power supply of oar motor and brake actuator thereof;
Become the oar motor relay, be used for control and become the power or power-down of oar motor;
The brake actuator relay is used for the power or power-down of control brake actuator;
Control relay circuit is used for control and becomes oar motor relay and the power or power-down of brake actuator relay;
The control power supply is used for powering to control relay circuit;
Described control relay circuit is digital circuit.
Described control relay circuit comprises data acquisition unit and logic control element:
Data acquisition unit is used for gathering the controlled supplemental characteristic of pitch-controlled system, and sends into logic control element;
Logic control element carries out logical operation to the controlled supplemental characteristic of input, compares with the set point that prestores, and judges the system failure, and operation result is outputed to control relay circuit.
Described logic control element comprises single-chip microcomputer and an interface circuit thereof with A/D converting unit; Data acquisition unit after light-coupled isolation, is sent into the I/O mouth of single-chip microcomputer with digital signal one by one by buffer, after analog signal is amplified by amplifier, send into the analog input pin of single-chip microcomputer through light-coupled isolation.
Described logic control element has the CAN interface, connects pitch-controlled system communication with redundant dual CAN bus.
Described logic control element also has encoder circuit and synchronous serial interface, stores the blade deflection angle coding of pitch-controlled system in the encoder circuit, by the synchronous serial interface of optical coupling isolation circuit access logic control element.
Described logic control element also has the RS232 interface circuit, connects level transferring chip at microcontroller serial port, and the rs 232 serial interface signal of TLL level is converted to RS232 fiduciary level signal.
Described change oar motor is the DC motor of rated voltage 230V, the brake actuator rated voltage is 200V DC, described electrical source of power is the changeable electrical source of power of two-way, 400VAC power supply and 230VAC ups power, the 400VAC power supply, is powered to brake actuator through buck rectifier to becoming the power supply of oar motor through the motor servo rectifier; Described 230VAC ups power is powered to becoming oar motor and brake actuator by storage battery to charge in batteries again.
Described storage battery is lithium battery.
The beneficial effect that the present invention produces is:
◆ improved motion characteristic and the performance of relaying protection, the action accuracy is high, and stability is strong, has greatly reduced relay quantity, has also just reduced the possibility of misoperation.Be mainly manifested in and can obtain the characteristic that GPF (General Protection False is difficult for acquisition, its very strong memory function realizes the fault component protection better.
◆ process structure is with favourable conditions, is embodied in hardware more common, easily unified standard; The space, the volume that take the axle control cubicle are little, have reduced slash position quantity, and power consumption reduces greatly.
◆ Reliability Enhancement, the characteristic that is embodied in digital element is not subject to the impact of variations in temperature, power-supply fluctuation, service life, is not subject to the impact of element replacement; Self check and the ability of patrolling and examining are strong, and the available software method detects operating mode and the functional software itself of main element, parts.
◆ flexible and convenient to use, man-machine interface is more and more friendly, and it safeguards that debugging is also more convenient, thereby has shortened maintenance time, simultaneously according to operating experience, can change characteristic, structure by software approach at the scene.
The present invention be directed to the digital protection device of wind generating set pitch control system design, realize respectively the defencive function to each blade control.
Description of drawings
Fig. 1 is the structural representation of protective relaying device of the present invention;
Fig. 2 is the circuit diagram of digital protection device of the present invention;
Fig. 3 is the topological structure schematic diagram of digital protection module of the present invention;
Fig. 4 is digital protection module main program flow chart of the present invention;
Fig. 5 is voltage of the present invention protection module control flow chart when normal;
Fig. 6 is that external voltage of the present invention is undesired, protection module control flow chart when battery tension is normal;
Fig. 7 is external voltage of the present invention and battery tension protection module control flow chart when all undesired.
Embodiment
As shown in Figure 1 and Figure 2: the present invention is a kind of digital protection device for fan paddle-changing system, is arranged in the axle control cabinet that drives the paddle running power supply protection switch that the ON/OFF by relay realizes.Mainly comprise following components:
Electrical source of power is used for to becoming the power supply of oar motor and brake actuator thereof;
Become the oar motor relay, be used for control and become the power or power-down of oar motor;
The brake actuator relay is used for the power or power-down of control brake actuator;
Control relay circuit is used for control and becomes oar motor relay and the power or power-down of brake actuator relay, and this control relay circuit is digital circuit;
The control power supply is used for being 24VDC to the control relay circuit power supply.
Electrical source of power is the changeable electrical source of power of two-way, is 400VAC power supply and 230VAC ups power.The change oar motor that the present embodiment adopts is the DC motor of rated voltage 230V, and the brake actuator rated voltage is 200V DC.Therefore, the electrical source of power of employing is the changeable electrical source of power of two-way, is 400VAC power supply and 230VAC ups power.The 400VAC power supply is converted to 230V DC to becoming the power supply of oar motor through motor servo rectifier Pitch master, is converted to 200VDC through buck rectifier and powers to brake actuator; The 230VAC ups power, is directly powered to becoming oar motor and brake actuator by storage battery to charge in batteries by by relay 3K11 control again.230VAC also is converted to the control power supply of 24VDC by buck rectifier, power to control relay circuit.
Control relay circuit of the present invention is made of data acquisition unit and logic control element two parts.
Data acquisition unit is the various transducers that are arranged on axle control cabinet and the pitch-controlled system, and its major function is with input signals such as some signals of telecommunication at scene, non-electrical signals, by steps such as sampling, isolation, is input to logic control element such as single-chip microcomputer and carries out computing.Signal generally includes some analog quantitys, such as the voltage on storage battery, external power source and the change oar motor, electric current, temperature etc., and gather some digital quantities on storage battery, external power source, relay and the change oar motor in the axle control cabinet such as the state of system's repeat circuit switch etc.Digital quantity signal is electric potential signal, directly sends into logic control element; After analog signals is changed through A/D, send into the logic control element input in measure portion, because computer is digital circuit, its operation level is also lower than the secondary output signal level of electric power system instrument transformer.Therefore, Microcomputer Protection will carry out preliminary treatment to the input analog signal, and the rear and given setting value of machine sampling calculating compares as calculated again.
Logic control element is the core of this digital ring protection device.At first; receive the fault message with the protection device-dependent; again by the corresponding principle of these information bases; carry out comprehensive and the logic judgement; compare with the fixed value that prestores; then determine whether send trip signal, and the switching signal of relay outputed to control relay circuit, make the equipment that breaks down as far as possible promptly with isolation of system.Logic control element comprises the links such as comprehensive, the analysis of information and logic processing, resolution; digital protection mainly is with the difference that conventional simulation is protected: digital protection is to carry out numerical value (comprising logic) computing with digital technology to realize these functions; its numeral and logical operation realize by software, i.e. these computings will be by finishing by certain rule (language) formulation computer program in advance.So, can say that digital protection is dimerous by " hardware " and " software ", hardware is the basis of realizing relay protection function.And the digital relay protection principle is by software, is namely realized by calculation procedure, and the difference of program can realize different protection operations.
The switching signal that control relay circuit transmits according to logic control element is opened or is closed, and finishes the action of protective device.Motor servo rectifier Pitch master is connected with relay 3K7 between relay 3K4, buck rectifier and the brake actuator and is connected with becoming to be connected with between the oar motor.Storage battery is a lithium battery, connects by relay 3K3 to become the oar motor, connects brake actuator by relay 3K5.
In the control relay circuit, logic control element is divided into according to the input and output part of Digital Circuit Signal: numerical protection module DI (signal input part) and numerical protection module DO (signal output part).Numerical protection module DI links to each other with relay 3K2,3K3,3K4,3K5,10K7, receives the electric potential signal of each relay and other signals that data acquisition unit gathers.Numerical protection module DI, master controller are in parallel with relay 3K2 three, and again series relay 3K1, and 3K2 often opens, 3K1 is normally closed.Namely when 3K2 was closed, numerical protection module DI, master controller disconnected with being connected one by one of relay, and the numerical protection module is not worked; When only having 3K1 closure, 3K2 disconnection, numerical protection module DI ability and master controller conducting are also worked, and could receive the electric potential signal of following relay.3K2, (3K3 and 3K4), (3K5 and 10K7) three group relaies are in parallel, and 3K2,3K3 and 3K5 are normally closed, and 3K4 and 10K7 often open.Therefore, relay 3K3 and 3K4 interlocking, relay 3K5 and 10K7 interlocking are namely when 3K3 transmits high level, 3K4 transmits low level, when 3K3 transmission low level, 3K4 transmit high level; When 3K5 transmission high level, 10K7 transmit low level, when 3K5 transmission low level, 10K7 transmit high level.Numerical protection module input DI is electric potential signal, current signal and the temperature signal of the collection of receive data collecting unit also.
Numerical protection module DO links to each other with relay 3K1,3K4,3K7,3K11,10K7, by 3K1 control, storage battery charged, and to the ON/OFF signal of relay 3K4,3K7,3K11 and 10K7 sending filter.24VDC powers by 230VAC, by the relay 3K1 digital protection module DO that connects, is numerical protection module DO power supply, the operating voltage of 3K1 control figure protection module DO, thus control its operating state.Numerical protection module DO relay 3K4 in parallel, 3K7,3K11 and 10K7 provide relay ON/OFF signal to 3K4,3K7,10K7, thereby control become oar motor and brake actuator, and the relaying protection to pitch system of wind driven generator is provided.
In the situation of 400VAC and the equal normal power supply of 230VAC UPS; the signal of the limit switch of digital quantity signal 521, service switch signal and the blade of the cabin master controller that logic control element receives by numerical protection module DI carries out logic and judges; according to judged result, directly will output signal to by numerical protection module DO and become the oar motor and the brake actuator transfer relay switches.
Undesired and the 230VAC UPS power supply of 400VA power supply under normal circumstances; the 400VAC voltage that logic control element receives by numerical protection module DI and the signal of phase sequence detection module; and carry out logic according to the limit switch signal of the digital output 521 of master controller and service switching signal and blade and judge; according to judged result, directly will output signal to by numerical protection module DO and become the oar motor and brake actuator power switching relay switches.
400VAC and 230VAC UPS power under the equal deviant circumstance, because the power supply of logic control element was lost efficacy and no longer worked, directly finish switching by becoming oar motor and brake actuator power switching relay.
Logic control element is signals collecting, logical operation and output module main in the native system, and the present embodiment is selected 16 XC164CS-16F40F of Infineon company, and its key technical indexes is as follows:
1. disposal ability is powerful: XC164CS is 16 MCU single-chip microcomputer, and peak frequency can reach 40MHz.Contain the DSP data and process (MAC unit) function, support that single command cycle, nonpipeline 32 add, 32 subtract, move to right move to left, 16x16 position multiplication, multiply accumulating/subtract.
2. Flash adopts the error correcting code capable of dynamic to correct single-bit error among the Flash on the sheet of the reliability of chip: XC164CS, thereby has improved the integrality of data.
3. the level security of data: the Flash module provides two kinds of data/code protection mechanism, comprises the general read/write protection of whole Flash array, and the particular sector write-protect.
4. powerful: TwinCAN, synchronous asynchronous serial ports at a high speed, integrated 128K bytes Flash.
5. working temperature is wide: can trouble free service in-40 degree～+ 150 degree scopes.
Because XC164CS is integrated 14 road analog input channels, can not finish collection to analog quantity so in logic control element, do not need to extend out the A/D chip.Compare with extending out the A/D chip, speed and stability all are guaranteed.
As shown in Figure 3, collection and the output of signal in the signals collecting relevant with protection that logic control element is mainly finished and output and the axle control cabinet, the various inputs and the output signal that need are as follows:
● 15 railway digital amounts inputs (DI):
(1) 400VAC voltage monitoring module 1A2 signal (is annotated: not expression on Fig. 3);
(2) use the relay 3K3 switching signal of battery tension power supply (to annotate: not expression on Fig. 3);
(3) motor servo rectifier Pitch master (annotates: not expression on Fig. 3) for the relay 3K4 switching signal that becomes the power supply of oar motor;
(4) removing storage battery (annotates: not expression on Fig. 3) to the relay 3K5 switching signal of brake actuator power supply;
(5) removing 400VAC (annotates: not expression on Fig. 3) to the relay 3K7 switching signal of brake actuator power supply;
(6) become oar electrical motor fan power supply normal signal;
(7) become oar motor protection rotor ok signal;
(8) become oar excessive current flow in motor signal;
(9) initialization relay 3K1 switching signal (is annotated: not expression on Fig. 3);
(10) battery tension normal signal;
(11) battery state of charge signal;
(12) in the battery charging process electric voltage over press is arranged;
(13) whether the charge in batteries loop has fault;
(14) 91 ° of limit switches of blade (relay 3K6) signal;
(15) 95 ° of limit switch signal of blade.
● 3 road analog inputs (AI):
＜1〉becomes oar motor rotor electric current;
＜2〉battery temp;
＜3〉become the oar motor temperature.
Annotate: temperature detection detects and adopts platinum resistance thermometer sensor, PT100 analog input.
● No. 1 encoder input (SSI): judge the code signal of blade angle, i.e. the encoder of A and B.
● 4 railway digital amounts outputs (DO):
1) signal of control charge in batteries switch, namely the switching signal of relay 3K11 (is annotated: not expression on Fig. 3);
2) the relay 3K7 switching signal that 400VAC is unclamped through buck rectifier control brake;
3) switching signal of relay 10K7, since 10K7 and 3K5 interlocking, the relay 3K5 that final control is unclamped storage battery control brake;
4) relay 3K4 switching signal, when numerical protection module DO sends signal relay 3K4 coil is powered on, since 3K3 and 3K4 interlocking, relay 3K3 coil losing electricity, and servo driver of motor Pitch master is to becoming the power supply of oar motor; When numerical protection module DO sent signal and makes relay 3K4 coil losing electricity, because 3K3 and 3K4 interlocking, relay 3K3 coil powered on, and storage battery is to becoming the power supply of oar motor.
● 1 road pulse-width signal output (PWM): namely access the motor servo rectifier the 10VAC signal (10V～+ 10V).
● also have:
1. communication interface (is annotated: not expression on Fig. 3);
2. the RS232 serial communication interface (is annotated: not expression on Fig. 3);
3. the dual CAN bus interface accesses on the CAN bus that becomes between oar controllers and the servo rectifier Pitch master by two CAN.
The hardware of logic control element is except single-chip microcomputer, the interface unit and the telecommunication circuit that also comprise the single-chip microcomputer periphery, digital quantity input, digital output, analog input, encoder input and telecommunication circuit are arranged, and the below is described in detail with regard to the circuit design of every part:
The circuit design of digital quantity importation: with the various switching value signals at scene after the light-coupled isolation conversion, by being connected to again the I/O mouth of single-chip microcomputer behind the buffer, the ground of input and output separates fully, so extraneous interference, and impulse currents etc. can not affect controller.
The circuit design of analog input part: adopt platinum resistance thermometer sensor, PT100 as temperature sensor, because what PT100 measured is storage battery and the temperature that becomes slurry electric work machine, can shorten the distance of PT100 and single-chip microcomputer as far as possible, so only need to adopt the PT100 of two-wire system to get final product output after amplifying via the instrument amplifier chip.Simulation current flow is behind the platinum resistance thermometer sensor, sampled voltage, and therefore the current value size needs to connect amplifier between 0mA-20mA, after amplifying, accesses subordinate's buffer circuit again.Analog quantity is via the analog input pin of the single-chip microcomputer of being allowed for access after the linear optical coupling isolation.Analog quantity is via the analog input pin of the single-chip microcomputer of being allowed for access after the HCNR201 linear optical coupling isolation.Because XC164CS is integrated 14 road analog input channels, can not finish collection to analog quantity so in this module, do not need to extend out the A/D chip.Compare with extending out the A/D chip, speed and stability all are guaranteed.
The circuit design of digital output part: the most of forceful electric power circuit of giving of digital output, thereby extremely important with the isolation of light current, this circuit has been realized the two poles of the earth isolation from the optocoupler to the relay, processor digital signal out is to the primary side of optocoupler, when digital signal is low level, the optocoupler conducting, indicator light is bright, the output high level; When digital signal is high level, in like manner there is indicator light to extinguish output low level.
The circuit design of encoder importation: the present embodiment adopts the encoder of A and B, the code signal of input blade angle, simultaneously, so that code signal receives and dispatches via MAX488, because the encoder input needs light-coupled isolation equally.The effect of MAX488 is exactly that the TTL signal that single-chip microcomputer is exported is converted to differential signal.
The communication line of this digitlization protective device comprises RS232 interface and CAN communication interface:
The RS232 interface of the present embodiment is the serial ports that utilizes single-chip microcomputer or UART chip to expand out, connects level transferring chip MAX232AESE again and realizes.The function of chip MAX232AESE is exactly that rs 232 serial interface signal with Transistor-Transistor Logic level is converted to the level signal that meets the RS232 standard.If need to realize the interface of RS422, similar with the realization of RS232 interface, also be to connect again level transferring chip MAX488 by the serial ports that single-chip microcomputer or UART chip are expanded out.
Simultaneously; logic control element also has the CAN communication interface; peculiar pair of CAN structure of core processing unit XC164CS single-chip microcomputer that we adopt brings great convenience to communication, so that the digital protection device can communicate by the core control system in bus and the main control cabinet.Based on the CAN communication interface of XC164CS design, circuit is simple, and is easy to use.Draw the CAN director port from P9.3, the P9.2 pin of XC164, by the optocoupler isolation, be connected to the CAN transceiver.CAN transceiver holding wire is out received on the bus of outside.The high performance bus transmitting-receiving TLC6250 of this circuit employing Infineon does the interface between single-chip microcomputer and the physical transfer circuit, can be operated in rated voltage is in the CAN bus system of 12V and 24V, can use up to the bit rate of 1Mbps and transmit certificate in differential mode on a pair of bus cable.Unsettled just employing of TLC6250 the 5th pin RM only received characteristic (receive-only feature), and the 8th pin ground connection configuration TLE6250 is normal mode, otherwise is standby mode.Bus can be used parallel lines or twisted-pair feeder, and the terminal of bus must connect 120 Ω resistance, and other node that is connected on the bus then need not to connect 120 Ω terminal resistances.Single-chip microcomputer is circumscribed with peripheral storage, power supply circuits and reset circuit.The effect of peripheral storage EEPROM is the significant data that some power down of storage still keep.RAM can remove, but considers for system upgrade, also can temporarily keep.The power supply circuits of single-chip microcomputer and reset circuit are comparatively simple, but effect is very important, is the indispensable part of single chip circuit.Reset circuit in the present embodiment adopts and sees the doorway chip, is to make it recover normal conventional chip after Single Chip Microcomputer (SCM) program is made mistakes or entered endless loop.
As shown in Figure 4; it is the master control flow process of pitch system of wind driven generator protective relaying device control of the present invention; can divide three kinds of situations to describe in detail, be respectively: when external voltage is normal, 400VAC voltage is undesired and 230VAV (USV) power supply when normal and externally fed when all undesired.
1, as shown in Figure 5 be the detailed control flow of external voltage when normal:
◆ master control is by 3 outputs, 521 signals of slip ring 19R2, and 521 signals become the oar control signal for selecting automatically to become oar or battery;
◆ after protection module detected 521 signals, output signal powered on relay 3K4;
◆ after the 3K4 coil powered on, the power supply that becomes oar motor and brake actuator provided by 400VAC;
◆ after 3K1 and 3K4 coil all power on, motor servo rectifier Pitch master is started working.
◆ after 3K6 (91 degree limit switch) action, master control provides the bypass limit switch signal by 3 of slip ring 19R4.After the bypass limit switch signal arrived, protection module was made the action the same with detecting 521 signals.After blade contacts limit switch, can provide by master controller " bypass limit switch signal ", the shielding limit switch, operating personnel can control the blade proper motion.
◆ when 521 signals are high level, motor servo rectifier Pitch master starts working.Become oar controller control brake actuator and finish the action of releasing of brake: become the oar controller output signal, relay 3K7 coil powers on, and becomes oar motor 230VDC power turn-on, and brake actuator control control becomes the brake of oar motor and unclamps.Become the oar motor by the 400VAC Power supply, receive its control signal if become the oar motor this moment, motor rotates on request.
2, as shown in Figure 6 be that 400VAC voltage is undesired, the detailed control flow when 230VAC (USV) power supply is normal:
◆ protection module detects the 1A2 relay contact and disconnects, the beginning timing, and timing 3s changes next step over to.
◆ because 400VAC voltage is undesired, protection module is no longer exported the signal that relay 3K4 coil is powered on.Simultaneously, the power supply of motor servo rectifier Pitch master is cut off, and motor servo rectifier Pitch master no longer works, and motor servo rectifier Pitch master offers the power supply that becomes the oar motor and also is cut off.
◆ master controller is no longer exported 521 signals.
◆ 3K5,3K3 relay coil will power on successively, and brake actuator control becomes the brake of oar motor and unclamps.
◆ the 3K3 relay coil powers on, and becomes the oar motor by storage battery power supply, and electric machine rotation is until bump against the limit switch of blade.When the limit switch action of blade, 3K5 and the equal dead electricity of 3K3 relay coil, brake actuator control becomes the brake locking of oar motor, and storage battery is cut off to the power supply that becomes the oar motor.
◆ therefore, when 400V voltage is undesired, becomes the oar motor and rotated by storage battery power supply, until blade bumps against limit switch.
3, as shown in Figure 7 be the detailed control flow of externally fed when all undesired:
◆ when externally fed is all undesired, protection module and become the oar controller and all can not work.3K1, the equal dead electricity of 3K4 relay coil, 3K5 and 3K3 coil will power in succession.After the 3K5 coil powered on, brake actuator control became the brake of oar motor and unclamps.After the 3K3 relay coil powers on, become the oar motor by storage battery power supply.
◆ become the oar motor by storage battery power supply, and the brake that becomes the oar motor unclamps, so electric machine rotation, until blade bumps against limit switch.
◆ become the oar motor and bump against limit switch, the limit switch action, 3K5 and the equal dead electricity of 3K3 relay coil, the brake locking of change oar motor, storage battery is cut off to the power supply that becomes the oar motor.
◆ therefore, when system's dead electricity, become the oar motor and rotated by storage battery power supply, until bump against limit switch.
Claims (3)
1. pitch system of wind driven generator protective relaying device comprises:
Electrical source of power is used for to becoming the power supply of oar motor and brake actuator thereof;
Become the oar motor relay, be used for control and become the power or power-down of oar motor;
The brake actuator relay is used for the power or power-down of control brake actuator;
Control relay circuit is used for control and becomes oar motor relay and the power or power-down of brake actuator relay;
The control power supply is used for powering to control relay circuit;
It is characterized in that, described control relay circuit is digital circuit, comprises data acquisition unit and logic control element:
Data acquisition unit is used for gathering the controlled supplemental characteristic of pitch-controlled system, and sends into logic control element;
Logic control element carries out logical operation to the controlled supplemental characteristic of input, compares with the set point that prestores, and judges the system failure, and operation result is outputed to control relay circuit;
Described logic control element comprises single-chip microcomputer and an interface circuit thereof with A/D converting unit; Data acquisition unit after light-coupled isolation, is sent into the I/O mouth of single-chip microcomputer with digital signal one by one by buffer, after analog signal is amplified by amplifier, send into the analog input pin of single-chip microcomputer through light-coupled isolation;
Described logic control element has the CAN interface, connects pitch-controlled system communication with redundant dual CAN bus;
Described logic control element also has encoder circuit and synchronous serial interface, stores the blade deflection angle coding of pitch-controlled system in the encoder circuit, by the synchronous serial interface of optical coupling isolation circuit access logic control element;
Described logic control element also has the RS232 interface circuit, connects level transferring chip at microcontroller serial port, and the rs 232 serial interface signal of TLL level is converted to RS232 fiduciary level signal.
2. pitch system of wind driven generator protective relaying device according to claim 1, it is characterized in that: described change oar motor is the DC motor of rated voltage 230V, the brake actuator rated voltage is 200VDC, described electrical source of power is the changeable electrical source of power of two-way, 400VAC power supply and 230VAC ups power, the 400VAC power supply, is powered to brake actuator through buck rectifier to becoming the power supply of oar motor through the motor servo rectifier; Described 230VAC ups power is powered to becoming oar motor and brake actuator by storage battery to charge in batteries again.
3. pitch system of wind driven generator protective relaying device according to claim 2, it is characterized in that: described storage battery is lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255134XA CN101964539B (en) | 2010-08-14 | 2010-08-14 | Relay protection device of variable pitch blade system of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255134XA CN101964539B (en) | 2010-08-14 | 2010-08-14 | Relay protection device of variable pitch blade system of wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101964539A CN101964539A (en) | 2011-02-02 |
| CN101964539B true CN101964539B (en) | 2013-02-13 |
Family
ID=43517325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010255134XA Active CN101964539B (en) | 2010-08-14 | 2010-08-14 | Relay protection device of variable pitch blade system of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101964539B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828904A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Wind-power-generation variable-pitch control system with CAN (control area network) communication system |
| CN102828905A (en) * | 2011-06-13 | 2012-12-19 | 苏州能健电气有限公司 | Safe and reliable alternating-current variable-pitch control system |
| CN102222973B (en) * | 2011-06-14 | 2013-04-17 | 湘潭世通电气有限公司 | Direct-current power supply device for variable-propeller controller of large wind motor |
| CN103475026B (en) * | 2013-09-17 | 2015-07-01 | 济南德明电源设备有限公司 | Grid connection and grid disconnection integrated device and method for micro-grid wind driven generator |
| JP6555167B2 (en) * | 2016-03-25 | 2019-08-07 | 株式会社安川電機 | Electric motor and brake release method |
| CN105958839A (en) * | 2016-06-20 | 2016-09-21 | 许继集团有限公司 | Switching power supply device and variable propeller system control cabinet |
| CN110017245B (en) * | 2019-03-30 | 2024-01-26 | 埃斯倍风电科技(青岛)有限公司 | Redundant control circuit and method for motor band-type brake in double-drive variable-pitch system |
| CN112242800B (en) * | 2020-11-20 | 2022-05-17 | 中船华南船舶机械有限公司 | Multi-motor electric control system |
| CN113323802A (en) * | 2021-07-15 | 2021-08-31 | 国家电投集团广西兴安风电有限公司 | Fan becomes oar system safety interlock |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576059A (en) * | 2009-04-02 | 2009-11-11 | 保定天威集团有限公司 | Variable-pitch controller for wind power generator |
| CN201401279Y (en) * | 2009-04-23 | 2010-02-10 | 锋电能源技术有限公司 | Low-temperature type wind generating set pitch-controlled device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5085910B2 (en) * | 2006-10-19 | 2012-11-28 | 那須電機鉄工株式会社 | Battery-less control method and apparatus for wind power generator |
-
2010
- 2010-08-14 CN CN201010255134XA patent/CN101964539B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576059A (en) * | 2009-04-02 | 2009-11-11 | 保定天威集团有限公司 | Variable-pitch controller for wind power generator |
| CN201401279Y (en) * | 2009-04-23 | 2010-02-10 | 锋电能源技术有限公司 | Low-temperature type wind generating set pitch-controlled device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-104286A 2008.05.01 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101964539A (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101964539B (en) | Relay protection device of variable pitch blade system of wind driven generator | |
| CN202057733U (en) | Super capacitor group state monitoring system of variable propeller pitch system | |
| CN103187735B (en) | Bidirectional intelligent gateway device for distributed new energy grid connection | |
| CN107017836A (en) | A kind of photovoltaic generating system and its component IV curved scanning methods | |
| CN203117441U (en) | Meteorology observation device with functions of double power supply switching and low voltage early-warning and alarming | |
| CN201277904Y (en) | Wireless vibration monitoring apparatus for hydroelectric generating set | |
| CN106249106A (en) | A kind of low-power consumption on-line monitoring terminal | |
| CN201276024Y (en) | Auxiliary control unit of power distributed motor train unit | |
| KR101441761B1 (en) | Battery Energy Storage System | |
| CN202679060U (en) | Uninterrupted power source management system of seabed observation network | |
| CN110707743A (en) | Dual-mode distributed photovoltaic power generation micro-grid control system and method based on MAS | |
| CN206575328U (en) | A kind of DC DC converters for supporting battery hot plug charged pool to manage | |
| CN102053211A (en) | Fault diagnosis method of wind power generation system converter device | |
| CN106405292A (en) | Fan variable pitch driver automatic testing system | |
| CN102025170B (en) | Display calculation type storage battery instant electric quantity charge-discharge protection management system | |
| CN103437954A (en) | Wind power variable pitch control system and wind power variable pitch system | |
| CN107342595A (en) | A kind of intelligent DC micro-grid system and control method | |
| CN106050562B (en) | A kind of wind generating variable-propeller control system | |
| CN101873349A (en) | Real-time energy consumption monitoring system for multi-nodes of wireless sensor network in working environment | |
| CN110080942A (en) | A kind of wind generating variable-propeller control system | |
| CN202260534U (en) | Battery voltage and temperature acquisition apparatus | |
| CN109611272A (en) | It is a kind of easily to replace without box variable blade control system | |
| CN102142711A (en) | Control system of wind driven generator | |
| CN201650588U (en) | Control device for brushless wind generator | |
| CN206114805U (en) | Fan becomes oar driver automatic test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SICHUAN ORIENT ELECTRIC AUTOMATIC CONTROL ENGINEER Free format text: FORMER OWNER: DONGFANG TURBINE CO., LTD., DONGFANG ELECTRIC GROUP Effective date: 20131225 Free format text: FORMER OWNER: SICHUAN ORIENT ELECTRIC AUTOMATIC CONTROL ENGINEERING CO., LTD. Effective date: 20131225 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131225 Address after: 618000 No. three, 18 South Mount Lu Road, Sichuan, Deyang Patentee after: Sichuan Orient Electric Automatic Control Engineering Co., Ltd. Address before: 618000 Jiangxi hi tech Industrial Park, Sichuan, Jinsha Road, No. 666, No. Patentee before: Dongfang Turbine Co., Ltd., Dongfang Electric Group Patentee before: Sichuan Orient Electric Automatic Control Engineering Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 618000 No. 18, Third Section of Lushan South Road, Deyang City, Sichuan Province Patentee after: Dongfang Electric Automatic Control Engineering Co., Ltd. Address before: 618000 No. 18, Third Section of Lushan South Road, Deyang City, Sichuan Province Patentee before: Sichuan Orient Electric Automatic Control Engineering Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |